CVE-2024-3998
📋 TL;DR
The Betheme WordPress theme has a stored XSS vulnerability in versions up to 27.5.6. Authenticated attackers with contributor-level access or higher can inject malicious scripts via shortcode attributes, which execute when users view compromised pages. This affects all WordPress sites using vulnerable Betheme theme versions.
💻 Affected Systems
- Betheme WordPress Theme
📦 What is this software?
Betheme by Muffingroup
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal admin credentials, redirect users to malicious sites, deface websites, or install backdoors for persistent access.
Likely Case
Attackers with contributor accounts inject malicious scripts to steal user session cookies or display phishing content to visitors.
If Mitigated
With proper user access controls and content filtering, impact is limited to isolated page defacement or minor data leakage.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 27.5.7 or later
Vendor Advisory: https://themeforest.net/item/betheme-responsive-multipurpose-wordpress-theme/7758048
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Check for Betheme theme updates. 4. Update to version 27.5.7 or later. 5. Clear any caching plugins.
🔧 Temporary Workarounds
Remove Contributor Role Access
allTemporarily restrict contributor-level users from creating or editing posts/pages.
Disable Betheme Shortcodes
allRemove or disable vulnerable Betheme shortcodes via theme functions.php or plugin.
add_filter('the_content', 'remove_betheme_shortcodes'); function remove_betheme_shortcodes($content) { return preg_replace('/\[betheme.*?\]/', '', $content); }
🧯 If You Can't Patch
- Restrict user roles to trusted administrators only.
- Implement web application firewall (WAF) rules to block XSS payloads in shortcode attributes.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes for Betheme version. If version is 27.5.6 or lower, system is vulnerable.Check Version:
wp theme list --field=name,version --format=csv | grep bethemeVerify Fix Applied:
Confirm Betheme theme version is 27.5.7 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual post/page edits by contributor-level users
- HTML/JavaScript in shortcode attributes in post content
Network Indicators:
- Outbound connections to suspicious domains from page loads
- Unexpected script tags in page responses
SIEM Query:
source="wordpress.log" AND ("shortcode" OR "betheme") AND ("script" OR "javascript" OR "onclick")